Articles
  • Dispersion forces at planar interfaces in anisotropic ceramics 
  • K.M. Knowles*
  • Department of Materials Science and Metallurgy, University of Cambridge, Pembroke Street, Cambridge, CB2 3QZ, U.K.
Abstract
Calculations are presented for the magnitude of the dispersion forces at rutile − vacuum − rutile, rutile − silica − rutile and rutile − water − rutile planar interfaces for the non-retarded limit. The calculations for rutile − vacuum − rutile and rutile − silica − rutile predict values of the Hamaker constant close to those determined through full spectral calculations using experimentally-determined interband transition strengths. However, subtle differences between these two approaches emerge when predicting trends in the Hamaker constant as a function of the orientation of the anisotropic rutile grains.

Keywords: Anisotropy, Hamaker constant, optical properties, planar interfaces, rutile, thin films

This Article

  • 2005; 6(1): 10-16

    Published on Mar 31, 2005